PPC programs, Keyword research and Link Building

I am looking for someone that can do some GOOD keyword search and PPC ads, further than the usual wordtracker or other keyword research, must find specialised niche markets. I have a few categories, but to start with I will give you one category to work on. Must show previous work and success rates, this will be a performance based contract, plus you will need to get my website cross linked to other sites for SEO. I am looking for long term business relationship; there will a deadline to meet if the deadline is not met, the project will be scrapped and no monies payed. Successful applicant will have further work.